Drink before dance? It's what a boxer may have (9)

I believe the answer is:

punchball

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'what a boxer may have' is the definition.
I can't tell whether this definition defines the answer.

'drink before dance?' is the wordplay.
'drink' becomes 'punch' (punch is an alcoholic drink).
'before' means one lot of letters go next to another.
'dance?' becomes 'ball' (ball is a kind of dance).
'punch'+'ball'='PUNCHBALL'

'it's' acts as a link.

Can you help me to learn more?

I've seen this clue in The Times.

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